一个小小的javaMail问题

用javaMail做了一个发送邮件的。在测试是的时候没有问题。在部署进出了点问时提示如下
Deleting directory F:\360data\重要数据\我的文档\NetBeansProjects\data\build
F:\360data\重要数据\我的文档\NetBeansProjects\data\nbproject\build-impl.xml:957: Unable to delete file F:\360data\重要数据\我的文档\NetBeansProjects\data\build\web\WEB-INF\lib\mail.jar
生成失败（总时间：1 秒）

这个是在清理部署里的提示
以下是放在TOMCAT下处理发送邮件时的错误
HTTP Status 500 -type Exception reportmessagedescription The server encountered an internal error () that prevented it from fulfilling this request.exceptionorg.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: 6 in the generated java file
Only a type can be imported. javax.persistence.criteria.From resolves to a packageAn error occurred at line: 40 in the jsp file: /data/web/JavaMailSend.jsp
Session cannot be resolved to a type
37:      pro.put("mail.smtp.host", mailServer);
38:      pro.put("mail.smtp.auth", "true");
39:      Session sess=Session.getInstance(pro);
40:      sess.setDebug(true);
41:      //鏂板缓涓�釜娑堟伅瀵硅薄
42:      MimeMessage message=new MimeMessage(sess);
43:      //璁剧疆鍙戜欢浜�     InternetAddress from_mail=new InternetAddress(from);
An error occurred at line: 40 in the jsp file: /data/web/JavaMailSend.jsp
Session cannot be resolved
37:      pro.put("mail.smtp.host", mailServer);
38:      pro.put("mail.smtp.auth", "true");
39:      Session sess=Session.getInstance(pro);
40:      sess.setDebug(true);
41:      //鏂板缓涓�釜娑堟伅瀵硅薄
42:      MimeMessage message=new MimeMessage(sess);
43:      //璁剧疆鍙戜欢浜�     InternetAddress from_mail=new InternetAddress(from);
An error occurred at line: 43 in the jsp file: /data/web/JavaMailSend.jsp
MimeMessage cannot be resolved to a type
40:      sess.setDebug(true);
41:      //鏂板缓涓�釜娑堟伅瀵硅薄
42:      MimeMessage message=new MimeMessage(sess);
43:      //璁剧疆鍙戜欢浜�     InternetAddress from_mail=new InternetAddress(from);
44:      message.setFrom(from_mail);
45:      //璁剧疆鏀朵俊浜�     InternetAddress to_mail=new InternetAddress(to);
46:      message.setRecipient(Message.RecipientType.TO, to_mail);
An error occurred at line: 43 in the jsp file: /data/web/JavaMailSend.jsp
MimeMessage cannot be resolved to a type
40:      sess.setDebug(true);
41:      //鏂板缓涓�釜娑堟伅瀵硅薄
42:      MimeMessage message=new MimeMessage(sess);
43:      //璁剧疆鍙戜欢浜�     InternetAddress from_mail=new InternetAddress(from);
44:      message.setFrom(from_mail);
45:      //璁剧疆鏀朵俊浜�     InternetAddress to_mail=new InternetAddress(to);
46:      message.setRecipient(Message.RecipientType.TO, to_mail);
An error occurred at line: 45 in the jsp file: /data/web/JavaMailSend.jsp
InternetAddress cannot be resolved to a type
42:      MimeMessage message=new MimeMessage(sess);
43:      //璁剧疆鍙戜欢浜�     InternetAddress from_mail=new InternetAddress(from);
44:      message.setFrom(from_mail);
45:      //璁剧疆鏀朵俊浜�     InternetAddress to_mail=new InternetAddress(to);
46:      message.setRecipient(Message.RecipientType.TO, to_mail);
47:      //璁剧疆涓婚
48:      message.setSubject(subject);
An error occurred at line: 45 in the jsp file: /data/web/JavaMailSend.jsp
InternetAddress cannot be resolved to a type
42:      MimeMessage message=new MimeMessage(sess);
43:      //璁剧疆鍙戜欢浜�     InternetAddress from_mail=new InternetAddress(from);
44:      message.setFrom(from_mail);
45:      //璁剧疆鏀朵俊浜�     InternetAddress to_mail=new InternetAddress(to);
46:      message.setRecipient(Message.RecipientType.TO, to_mail);
47:      //璁剧疆涓婚
48:      message.setSubject(subject);
An error occurred at line: 48 in the jsp file: /data/web/JavaMailSend.jsp
InternetAddress cannot be resolved to a type
45:      //璁剧疆鏀朵俊浜�     InternetAddress to_mail=new InternetAddress(to);
46:      message.setRecipient(Message.RecipientType.TO, to_mail);
47:      //璁剧疆涓婚
48:      message.setSubject(subject);
49:      //璁剧疆鍐呭
50:      message.setText(messageText);
51:      //璁剧疆鍙戦�鏃堕棿
An error occurred at line: 48 in the jsp file: /data/web/JavaMailSend.jsp
InternetAddress cannot be resolved to a type
45:      //璁剧疆鏀朵俊浜�     InternetAddress to_mail=new InternetAddress(to);
46:      message.setRecipient(Message.RecipientType.TO, to_mail);
47:      //璁剧疆涓婚
48:      message.setSubject(subject);
49:      //璁剧疆鍐呭
50:      message.setText(messageText);
51:      //璁剧疆鍙戦�鏃堕棿
An error occurred at line: 49 in the jsp file: /data/web/JavaMailSend.jsp
Message.RecipientType.TO cannot be resolved to a type
46:      message.setRecipient(Message.RecipientType.TO, to_mail);
47:      //璁剧疆涓婚
48:      message.setSubject(subject);
49:      //璁剧疆鍐呭
50:      message.setText(messageText);
51:      //璁剧疆鍙戦�鏃堕棿
52:      message.setSentDate(new Date());
An error occurred at line: 58 in the jsp file: /data/web/JavaMailSend.jsp
Transport cannot be resolved to a type
55:      Transport transport=sess.getTransport("smtp");
56:      transport.connect(mailServer,from,password);
57:      transport.sendMessage(message,message.getAllRecipients());
58:      transport.close();
59:      
60:      String strData=null;
61:      Date d=new Date();
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:95)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:457)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:367)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:345)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:332)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:594)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:342)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)note The full stack trace of the root cause is available in the Apache Tomcat/7.0.8 logs.请高手指点一下